Subtract 20/3 from 49/40
1st number: 1 9/40, 2nd number: 6 2/3
49/40 - 20/3 is -653/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 3 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
49/40 = 49 × 3/40 × 3 = 147/120 - Likewise, for the 2nd fraction, since 3 × 40 = 120,
20/3 = 20 × 40/3 × 40 = 800/120 - Subtract the two like fractions:
147/120 - 800/120 = 147 - 800/120 = -653/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/40-20/3 49/40-40/3 49/80-20/3 49/40-20/6 49/40-60/3 49/40-20/9 49/40-20/15 49/40-20/21